Core Nursing Explanation
Key Concept Analysis: This question tests the priority nursing intervention for a patient with
Acute Glomerulonephritis (AGN). AGN is an inflammatory condition of the
glomeruli (the kidney's filtering units), often following a streptococcal infection. The primary pathophysiological problem is
decreased glomerular filtration rate (GFR), leading to sodium and water retention, hypertension, and potential for
fluid overload. The priority in nursing care is always to address the most immediate threat to life and physiological stability.
Answer Rationale:
Key Point! Option ④ is correct because
hypertension and fluid overload are the most dangerous and immediate complications of AGN. The inflamed glomeruli cannot filter properly, causing fluid retention, increased blood volume, and elevated blood pressure. This can rapidly progress to hypertensive crisis,
pulmonary edema, or
heart failure (HF). Monitoring vital signs, especially blood pressure, and assessing for crackles in the lungs, edema, and weight gain are
priority assessments to prevent these life-threatening complications.
Distractor Analysis:
Watch out for confusion! Option ① (Encourage increased fluid intake) is incorrect and potentially harmful. In AGN, the kidneys are retaining fluid, not losing it. Increasing fluid intake would exacerbate hypertension and fluid overload. Fluid restriction is often a key part of the medical management.
Option ② (Administer prescribed antibiotics) is a secondary intervention. While AGN is often post-streptococcal, the antibiotics treat the underlying infection to prevent further immune complex deposition, but they do not address the acute, life-threatening complications of the nephritic process itself. The inflammatory damage is already ongoing.
Option ③ (Provide a high-protein diet) is contraindicated. Proteinuria (protein in urine) is common in AGN, but a high-protein diet increases the workload on the damaged glomeruli. Management typically involves
moderate protein restriction to reduce nitrogenous waste products that the kidneys are struggling to excrete.
Related Concepts: The nursing priorities in AGN follow the
ABCs (Airway, Breathing, Circulation) and Maslow's hierarchy. Fluid overload directly threatens breathing (pulmonary edema) and circulation (hypertension, heart failure). Nursing care focuses on
fluid balance management, monitoring for complications, administering antihypertensives and diuretics as ordered, and providing rest to reduce metabolic demands on the kidneys.
Concept Summary
| Concept | Explanation in AGN |
|---|
| Primary Problem | Glomerular inflammation → ↓ GFR → Sodium/Water Retention |
| Key Complications | Hypertension, Fluid Overload, Pulmonary Edema, Heart Failure |
| Priority Nursing Focus | Monitoring Vital Signs (BP), Assessing for Fluid Overload |
| Dietary Management | Fluid & Sodium Restriction; Moderate Protein Restriction |
| Common Cause | Post-streptococcal (e.g., after strep throat or impetigo) |
Side-by-Side Comparison!
| Acute Glomerulonephritis (AGN) | Nephrotic Syndrome |
|---|
| Glomerular Problem: Inflammation & decreased GFR | Glomerular Problem: Increased permeability (leaky) |
| Key Lab Finding: Hematuria (smoky urine), mild proteinuria | Key Lab Finding: Massive proteinuria (>3.5 g/day) |
| Primary Issue: Fluid retention, Hypertension, Oliguria | Primary Issue: Severe edema, Hypoalbuminemia, Hyperlipidemia |
| Dietary Focus: Fluid & Sodium restriction | Dietary Focus: Moderate protein, Sodium restriction |
| Priority Nursing: Monitor for fluid overload/hypertension | Priority Nursing: Monitor for infection, manage severe edema |
Anatomy, Physiology & Pharmacology Points
- Glomerulus Function: A network of capillaries where blood is filtered. Inflammation here impairs filtration, causing waste and fluid buildup.
- Renin-Angiotensin-Aldosterone System (RAAS): Impaired kidney perfusion in AGN can activate RAAS, worsening hypertension and fluid retention.
- Key Drugs in AGN: Antihypertensives (e.g., ACE inhibitors), Diuretics (e.g., furosemide) to manage hypertension/edema, and possibly antibiotics if active infection is present.
Memory Tips
- AGN = "A Get Nasty" with Fluid: Think Acute GlomeruloNephritis causes nasty fluid retention and hypertension.
- Priority = BP & Breath Sounds: Your top jobs are checking Blood Pressure and listening for crackles (sign of pulmonary edema).
- Diet Don'ts: Remember the "3 No's" for AGN diet: NO extra fluids, NO high salt, NO high protein.
High-Frequency NCLEX Topics
NCLEX loves to test priority-setting in renal disorders. AGN is a classic scenario where the intuitive action (give fluids for a sick patient) is wrong, and you must choose the action that manages the
complication (fluid overload) over treating the cause (infection). Be ready for questions that pit "monitor for complication" against "treat the underlying cause."
Watch Out for Question Variations!
- Symptom Identification: "A child with AGN is admitted. Which finding requires immediate intervention?" (Answer: Blood pressure of 160/100 mmHg or severe headache).
- Patient Education: "What is the most important instruction for a parent of a child with AGN?" (Answer: Report any swelling, decreased urine output, or headache).
- Medication Administration: "The nurse is preparing to administer furosemide to a client with AGN. What is the primary purpose?" (Answer: To reduce fluid overload and hypertension).